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(No Model.)

H. M. MINER.

ROOFING PABRIG.

Patented June 5, 1883 IHHFIESEES- .5. 6. Jam

n. PETERS. Phmmm wn Wuhinglun. o. a

30 jects.

UNITED STATES PATENT OFFICE.

HENRY M. MINER, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THEGRANITEROOFING COMPANY, (LIMITED,) OF SAME PLACE.

ROOFING FABRIC.

SPECIFICATION forming part of Letters Patent No.- 278,722,-dated June 5,1883.

Application filed March 15, 1883. (No model.)

To all whom it may concern Be it known that I, HENRY M. MINER, ofPittsb'urg, in the county of Allegheny and State of Pennsylvania, haveinvented a new and useful Improvement in- Roofing Fabric; and I dohereby declare the following to be afull, clear, and exact descriptionthereof, reference being had to the accompanying drawings, forming apart of this specification, in which Figure 1 is a perspective view of aweb of my improved roofing fabric. Fig. 2 is a crosssection of the same,showing the layers of which it is composed.

My invention consists of an improved roofing fabric, the components ofwhich are compressed firmly together. It is composed, first, of a layerof burlap or similar fabric second, a layer of roofing-paper which issaturated with coal-tar or other similar substance properly reduced;and, third, a layer of sand which is embedded in and adheres to theprepared surface of the paper, the layers being firmly united togetherand the sand deeply embedded by pressure properly applied thereto. Thelayer of sand is sufiicient to act as a drier and to cover the wholeupper surface of the paper, so that the tar is not exposed at all, thusrendering the fabric easy to handle, and prevent ing all liability tostick or adhere to other ob- The layer of burlap is united to the layerof paper by adhesion.

In the drawings, a indicates the layer of burlap -b, the layer of tarredpaper, and c the layer of sand. The upper surface of the sand ispreferably of a coarse or large grain. I prefer to use a ground orcrushed conglomerate stone, quartz, or granite for the top covering.After the two sheets, webs, or layers a and b are laid together, and thesand applied to the exposed side of the saturated sheet I), the whole issubjected to pressure to unite and compress the sheets, and to embeddeeply and intimately the sand, so that it shall give a close, dry surface, and will not rub or scale off in handling, coiling, or using.

The compressed fabric thus produced is compact, strong, light,flexible,,clean, and easy to handle, indestructible by decay, not liableto take fire, and especially adapted for roofing or sheathing purposes,and particularly for carroofs. 1

Vhat I claim as my invention, and desire to secure by Letters Patent, is

A roofing or sheathing fabric composed of a layer of tarredroofing-paper having an external layer of burlap or other fabric on oneside and an external dry coating of sand on the other, compressedtogether, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 9th day of March,A. D. 1883.

HENRY M. MINER.

